Optimized CyberKnife Lung Treatment: Effect of Fractionated Tracking Volume Change on Tracking Results

Figure 1

The image processing software obtains the pixel and average brightness values of the tracking volume in the image. Note: the solid blue contour in the figure is the projection of tumor tracking volume on real-time X-ray images. The black dotted outline is the area where the graph processing software calculates the density and mean brightness.